Another try to fix travis

.travis.yml

@@ -21,6 +21,7 @@ before_script:
 
 script:
   - DATABASE=mysql vendor/bin/phpunit -c phpunit-mysql.xml
+  - php artisan config:clear
   - DATABASE=sqlite vendor/bin/phpunit -c phpunit.xml  --coverage-clover=coverage.xml
 
 after_success:

database/migrations/2020_10_20_211115_add_group_id_column_to_twofaccounts_table.php

@@ -33,7 +33,8 @@ public function down()
     {
         Schema::table('twofaccounts', function (Blueprint $table) {
                 // cannot drop foreign keys in SQLite:
-                if ('sqlite' !== config('database.default')) {
+                $driver = Schema::connection($this->getConnection())->getConnection()->getDriverName();
+                if ('sqlite' !== $driver) {
                     $table->dropForeign(['group_id']);
                 }
             }